Three-wheel vehicle traveling system with king pin caster angle adjusting mechanism

Abstract

The invention relates to a three-wheel vehicle traveling system with a king pin caster angle adjusting mechanism. The three-wheel vehicle traveling system comprises a front wheel, a king pin mechanism, a frame and a cargo tank. The king pin mechanism comprises a king pin and a king pin sleeve, and the king pin sleeve is positioned in a mounting box; a first self-locking mechanism and a king pin adjusting mechanism are arranged on one side of the king pin sleeve, and a second self-locking mechanism is arranged on the other side of the king pin sleeve; the king pin adjusting mechanism comprises an adjusting connecting rod, a master hydraulic cylinder, an auxiliary hydraulic cylinder and a hydraulic control system; the king pin caster angle adjusting mechanism comprises the first self-locking mechanism, the second self-locking mechanism and the king pin adjusting mechanism. The three-wheel vehicle traveling system has the advantages that forward swing adjusting self-locking or backward swing adjusting self-locking around an axle of the front wheel can be carried out on the king pin under the effects of the king pin adjusting mechanism, the first self-locking mechanism and the second self-locking mechanism, and accordingly self-excitation shimmy of a three-wheel vehicle can be reduced or restrained; the problem of shimmy of existing three-wheel vehicles can be solved, and shimmy restraining effects can be realized to a perfect degree.

Description

technical field [0001] The invention belongs to the technical field of motor tricycles, and in particular relates to a driving system of motor tricycles. Background technique [0002] China is the world's second largest manufacturer and user of tricycles (India is the largest producer). Due to the low use cost and high use efficiency of the tricycle, it has become an important means of transportation in the vast rural areas and the urban-rural junction, but it has also brought serious traffic safety problems, and the problem of driving stability is prominent. The vibration problem is more serious. [0003] Front wheel shimmy refers to the phenomenon that the steering wheel vibrates continuously around the kingpin with a certain amplitude and frequency when the vehicle is driving straight on a flat road. The front wheel shimmy will make the linear stability of the vehicle worse, and in severe cases, a "serpentine" phenomenon will appear, which will aggravate the wear of the...

AI Technical Summary

Problems solved by technology

Due to the low use cost and high use efficiency of the tricycle, it has become an important means of transportation in the vast rural areas and the urban-rural junction, but it has also brought serious traffic safety problems, and the problem of driving stability is prominent. The vibration problem is more serious

However, shimmy dampers usually have the following disadvantages: 1. Very low damping coefficient based on small hydraulic restrictions, because those containing higher restrictions will need to protect the restriction holes with screens, which may be difficult to integrate into existing designs; 2. The hydraulic confinement has a large geometric tolerance because it is usually a simple drilled hole rather than a precise calibration hole; 3. The oil volume of the hydraulic chamber is small, and the oil is heated quickly under strong shimmy vibration, which reduces the damping force; 4. Anti-cavitation valves are usually custom made, which makes them difficult to replace if high frequency response is required after testing; 5. The hydraulic compensator is threaded into the shimmy damper body, and a weak mechanical connection is likely to fail under vibration fatigue ; 6. The hydraulic limit is greatly affected by the oil temperature change

[0007] In addition, in the prior art, for the situation of shimmy vibration, most of the mechanisms and devices involved can only qualitatively indicate that shimmy vibration can be suppressed, but cannot quantitatively explain to what extent the shimmy vibration can be suppressed. Vibration suppression optimization problem

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